Plural lamp-socket.



XR. B. BENJAMIN.

PLURAL LAMP SOCKET. A APPLICATION FILED MAR. 1, 1907.

898,826, Patented Sept. 15, 1908J vnally through the plug 6 and AllllITljl@ STAIRS! PATENT CFFICE.

REUBEN B. BENJAMIN, OF CHICAGO, ILLINOIS, ASSICNCH T() BEN PLRAL LAMP-soCKET.

To all whom it may Concern:

Be it known that I, REUBEN B. BENJAMiN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Plural Lamp-Sockets, of which the following is a full, clear, concise, and exact description, reference being had t'o the acconipanying drawing, forming a part of this specification.

My invention relates to improvements in electric lamp clusters, and particularly to a plural lamp-socket provided with a plug adapted to be inserted into an ordinary socket or receptacle.

One of the objects of the invention is the provision of a device of this type which is made up of butfew parts, which is 4economical to manufacture, and which is, at the same time, eflcient and durable.

In the accompanying drawings Figure 1 is a central vertical sectional view of a device v embodyingr my invention; and Fig. 2 is a cross-sectional view of the same', the section being taken on the line 2 2 of Fig. 1, looking in the direction indicated by the arrows.

In these-figures, in which like reference numerals indicate the same parts throughout, 5 is a base formed of porcelain or other suitable insulating material. This base 5 is provided with .a plug 6, having thereon an outer Contact member 7, this outer contact member preferably consisting of a threaded shell adapted to be sleeved onto the plug 6. The opposite side of the base 5 is formed or provi( ed with a projection 8. An opening 9 extends through the base, passing longitudi- A bolt 10 1s inserted into the opening 9, the outer end of this bolt serving as the center contact of the lug. Upon the opposite or inner end of this holt 10 is a plate 11 Secured thereto by a nut 12, the plate 11 serving as a contact member for engaging the center terminals el' the lamps. l `V The plug 6 is provided with other aper tures 13 and 14, through each of which extendsa bolt 15 and 16. The threaded contact-shell 7 is formed with an inturncd lflange 17 extending around its up )er edge and engaged by thc heads ol the bolts 15 and IG. 'Upon the inner side of the base 5 are arranged metallic plates 18 and 19, these plates being secured in place by screws 18a, 19,

projection 8. i

l and further secr Specification of Letters Patent. Application filed March l, 1907.

'Ihel projection 8 medium of these .IAMIN TURING COMPANY, OF CHICAGO, lIiLlNOISfA CORPORATION Patented Serial No. 360,091.

ELECTRIC MAN UFAC- LINOIS.

sept. 15, 1908.

ired by the bolts 15 and 16.

on the base is formed with bolts.

ach of which rests one of one of the plates 18 and 19, whereby the 'latter are held in position. bolts 15 and 16 are turned saine, the contact shell 7 19 are iirmly secu and are electrically lVlieii the to tighten the and plates 1S and red to the base and plug connected through the A shell 20, substantially hemisplierical in forni, and carrying the various lamp-holding devices, is supported upon t 1l), this shell atter being 2() being formed in the [erin of slits 21 and 22 project the ends of the plates he plates 18 and with openings through which body portion to retain the shell 20 in place thereon.

shell 20 is sustained Bv means of this and is nected with the outer conta The shell 2O is openings, in each contacting member adapted outer terminal of a lamp.

connection, the electrically conct7 ot' the plug.

18 and 19, the i turned up at an angle to their formed with a plurality of of which is is arranged for lamps of t these members w the plate 11.

When it is desired to ill into these ada secured a lampto engage the When the device he Edison type consist of threaded sockg the lamps.

When the sockets the cenlanips will engage pt the device to the use ol' a lamp disposed in axial alinenient with the bolt 1l), one of the laiiip-sockets will be arranged axially with this bolt, as shown in Fig. l, as the center cont'ac and the end ol the bolt 1() will serve t for a lamp.

'llic outer casing or cover 24, which is of substantially lieii'iisphcric with suitable the lamps,

arranged a threaded iiisula surrounding the them from this cover 24. ings are screwed into place they tain the cover sockets al forni, is provided openings for the insertion el 'and in each of these openings is ting bushing 25 23 and separating When these bushscrve to sus- 24 in place with its edge in engagement with the edge ol the base 5 without other means of support.

the

of to the outer thence through tl terminals le sockets then this device is provided with lamps,

circuits are through the l mit l() to the center terminals of these lamps, 3 lo thc shell 2l),

ioo

' thence through the plates 18 and 19 to the bolts 15 and 16, thence to the outer contact member 7.

Havingthus described my invention, what I claim as new and desire to secure by Letters Patent is :v

1. In a plug-cluster, the combination of a base having a plug upon one of its sides and a contact plate upon its opposite side, center and outer contacts upon said plug, electrical connection between said center contact and said plate, a bowl-shaped shell mounted upon said base, a plurality of circularly arranged lamp-holders and an axially disposed lampholder carried by said shell, and electrical connection between the outer contact of the plug and said shell.

2. In a'plug-cluster, the combination with a base having a plug on one of its sides, o't' a threaded shell mounted upon the plug to form the outer contact thereof', a plate mounted on the inner side of said base, a center contact upon the plug electrically connected with said plate, a circular shell mountf ed `upon the inner side of said base and hav-y ing a plurality of openings, one of said openings being in axial alinement with said plug, a threaded lamp-receiving shellin each of said openings, and electrical connection between the outer contact member of the plug and said circular shell.

3. In a plug-cluster, the combination with a plug having a center contact and an outer contact adapted to coperate with the contacts of asuitable receptacle, of a plurality of lamp-holding devices carried by said plug, one ot said lamp-holding devices being disposed in axial alinement with said plug, ampterminal-contacting devices assoclated with said lamp-holding devices, and electrical connection vbetween the contacts of the plug and'said contacting devices. g

4. In a plug-cluster, the combination with a plug having a center contact and an outer contact adapted to coperate with the contact of a suitable receptacle, of a lamp-holding device carried by and dis osed in axial alinement with said plug, a purality of cirarranged eularly arranged lamp-.holding devices carried by said plug, lamp-terminal-contacting devices associated with said lamp-holding devices, and electrical connection between the contacts of said plug and said contacting devices.

5. In a plug-cluster, the combination with a plug having a center contact and an outer contact adapted to cooperate with the contacts of' a suitable receptacle, of a circular shell carried by said )lug and supporting a plurality' ot lauw-holding devices, said shell being elect rically connected with one of the contacts ol the plug, and means for conducting current trom the other contact ot said.l plug to the center terminals o'tl all the lamps, one of said lamp-holding devices being disposed in axial alinement with said plug.`

(i. In a plug-cluster, a plug having a threaded shell sleeved thereon to constitute an outer contact for said plug., means carried by said plug providing a center contact for a plurality ot lamps, a bowl-shaped member adapted to support a plurality ot circular-ly lamps and au axially disposed lamp and to conduct current to the outer contacts of the, lamps, and a bolt extending through said plug and shell to the plug and providing electrical con nection between said plug and said bow shaped member.

7. In a plug-cluster, the combination-of a plug, a bowl-shaped shell carried by said lug 'tor supporting a plurality ot lamps, a

olt extending centrally through said plug, and means supported by said bolt for conducting current to the center contacts ol a plurality of said lamps, the inner end of said securing said threaded bolt forming the center contact for another of 4said lamps.

In witness whereof, I have hereunto subscribed my name in the presence ot' two wit- A. A. THOMAS, C. L. HOPKINS. 

